China Testing & Certification International Group Co., Ltd. (CTC, Stock Code 603060) originated from the testing and certification business of China Building Materials Academy in the 1950s. After 70 years of unremitting efforts and persistent pursuit, the company has formed five business categories: detection and testing, certification and evaluation, testing instruments and intelligent manufacturing, measurement and calibration, scientific research and technical services, committed to providing customers with technical services and comprehensive solutions of detection and testing, certification and evaluation, appraisal, consultation, training, and instruments and equipment in fields of quality, environmental protection, green, safety, health, and energy conservation.

In the field of chemical analysis in the cement industry, efficiency, accuracy, and intelligence have always been the focus of industry attention. Traditional wet chemical analysis methods are time-consuming, the X-ray fluorescence (XRF) pressed powder method has limited accuracy and precision, and the traditional XRF fused bead method imposes overly stringent requirements on experimental operations. To address these challenges, the technical expert team of China Testing & Certification International Group Co., Ltd. has conducted in-depth research, breaking through multiple technical barriers in XRF detection, and successfully developed a detection technology based on X-ray fluorescence spectrometry — MLD Technology. With XRF technology as its core, it creates an optimized testing solution.
MLD Technology is a groundbreaking fusion testing technology developed based on X-ray fluorescence spectrometry (XRF). It breaks the shackles of traditional chemical analysis methods and builds an innovative solution for XRF applications in the cement testing field, providing an efficient, convenient, cost-effective, and environmentally friendly full-process solution for the testing of cement and raw material samples.
Provide customized solutions for the accurate chemical composition analysis of samples such as cement, raw meal, clinker, gypsum, limestone, slag; siliceous raw materials, ferrous raw materials, aluminous raw materials, as well as various industrial waste slag samples including sulfuric acid slag and non-ferrous metal ash slag.
Silicon Dioxide (SiO₂)
Aluminum Oxide (Al₂O₃)
Iron Oxide (Fe₂O₃)
Titanium Dioxide (TiO₂)
Calcium Oxide (CaO)
Magnesium Oxide (MgO)
Sulfur Trioxide (SO₃)
Potassium Oxide (K₂O)
Sodium Oxide (Na₂O)
Manganese Oxide (MnO)
Phosphorus Pentoxide (P₂O₅)
Chromium Trioxide (Cr₂O₃)
Zinc Oxide (ZnO)
Chloride Ion (Cl⁻)
Cement: Common Portland cement, oil well cement, moderate and low heat cement, masonry cement, raw meal, clinker — GB/T 176
Aluminate Cement: Aluminate cement — GB/T 205
Limestone: Limestone for building materials, quicklime, hydrated lime — GB/T 5762
Ferrous Raw Materials: Iron ore, sulfuric acid slag, non-ferrous metal ash slag, converter slag, iron tailings, etc. — JC/T 850
Siliceous Raw Materials: Sandstone, clay, shale — JC/T 874
Aluminous Raw Materials: Fly ash, coal gangue — GB/T 176
Slag: Granulated blast furnace slag / slag powder — GB/T 27975
1. High Efficiency: Complete analysis of 80 samples per day, achieving a 20 to 40 times increase in efficiency compared to traditional chemical analysis (2-4 samples per day).
2. Low Technical Threshold: No professional or experience requirements; ordinary personnel can operate after one day of training, significantly reducing skill requirements for labor.
3. Cost Optimization: Taking a single 5,000 tons/day production line as an example, it can reduce the need for two fixed positions.
4. Environmental Friendliness: No use of strong acids or alkalis throughout the entire process, eliminating waste liquid and gas emissions at the source, while simultaneously reducing environmental treatment costs.
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